diff --git a/README.md b/README.md
index cada41b0..5472557f 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ exports.handler = handler
 
 ## Azure
 
-### Async Azure Function (v3) handler wrapper
+### Async Azure Function v3/v4 handler wrapper
 
 The only Azure Function specific code you need to write is a simple `index.js` and a `function.json` like below.
 
diff --git a/__tests__/integration.js b/__tests__/integration.js
index 580921cf..25528b34 100644
--- a/__tests__/integration.js
+++ b/__tests__/integration.js
@@ -240,6 +240,7 @@ describe.each(EACH_MATRIX)('%s:%s: integration tests', (eventSourceName, framewo
         delete response.multiValueHeaders.etag
         delete response.multiValueHeaders['last-modified']
         break
+      case 'azureHttpFunctionV4':
       case 'azureHttpFunctionV3':
         expectedResponse.body = Buffer.from(samLogoBase64, 'base64')
         expectedResponse.isBase64Encoded = false
@@ -424,6 +425,7 @@ describe.each(EACH_MATRIX)('%s:%s: integration tests', (eventSourceName, framewo
     })
 
     switch (eventSourceName) {
+      case 'azureHttpFunctionV4':
       case 'azureHttpFunctionV3':
         expectedResponse.cookies = [
           {
diff --git a/examples/azure-http-function-v3/README.md b/examples/azure-http-function-v3/README.md
index a91fc485..a82f1811 100644
--- a/examples/azure-http-function-v3/README.md
+++ b/examples/azure-http-function-v3/README.md
@@ -8,7 +8,7 @@ These prerequisites are required to run and debug your functions locally.
 
 - Visual Studio Code
 - Visual Studio Code - Azure Functions extension
-- Azure Functions Core Tools 
+- Azure Functions Core Tools (`npm install -g azure-functions-core-tools@3 --unsafe-perm true`)
 - Node.js
 
 _For further information on how to run an Azure Function locally please check [Develop Azure Functions by using Visual Studio Code](https://docs.microsoft.com/en-us/azure/azure-functions/functions-develop-vs-code?tabs=nodejs)._
diff --git a/examples/azure-http-function-v3/package-lock.json b/examples/azure-http-function-v3/package-lock.json
index 106ea3f5..0cc5335e 100644
--- a/examples/azure-http-function-v3/package-lock.json
+++ b/examples/azure-http-function-v3/package-lock.json
@@ -6,7 +6,7 @@
     "": {
       "name": "@vendia/serverless-express-example",
       "dependencies": {
-        "@vendia/serverless-express": "4.5.2",
+        "@vendia/serverless-express": "4.8.2",
         "body-parser": "1.19.1",
         "compression": "^1.7.4",
         "cors": "2.8.5",
@@ -15,9 +15,9 @@
       }
     },
     "node_modules/@vendia/serverless-express": {
-      "version": "4.5.2",
-      "resolved": "https://registry.npmjs.org/@vendia/serverless-express/-/serverless-express-4.5.2.tgz",
-      "integrity": "sha512-mekBOPnBxfhIvBYKVwfvjp9NtS+bOs3F08Vudxa3Fb7zkxtdjRn0UMLRT6zwWf6i4V5rjk2aEhzbIDSCV1GQ0w==",
+      "version": "4.8.2",
+      "resolved": "https://registry.npmjs.org/@vendia/serverless-express/-/serverless-express-4.8.2.tgz",
+      "integrity": "sha512-biv23HiYXZFe7ULKFIkdYLWtc07yN/iGMq9fg00nfbVqWeJvtfEubUimnhPwoR7I+kAm9ZDhuOBjMFjKmLPQzA==",
       "engines": {
         "node": ">=12"
       }
@@ -762,9 +762,9 @@
   },
   "dependencies": {
     "@vendia/serverless-express": {
-      "version": "4.5.2",
-      "resolved": "https://registry.npmjs.org/@vendia/serverless-express/-/serverless-express-4.5.2.tgz",
-      "integrity": "sha512-mekBOPnBxfhIvBYKVwfvjp9NtS+bOs3F08Vudxa3Fb7zkxtdjRn0UMLRT6zwWf6i4V5rjk2aEhzbIDSCV1GQ0w=="
+      "version": "4.8.2",
+      "resolved": "https://registry.npmjs.org/@vendia/serverless-express/-/serverless-express-4.8.2.tgz",
+      "integrity": "sha512-biv23HiYXZFe7ULKFIkdYLWtc07yN/iGMq9fg00nfbVqWeJvtfEubUimnhPwoR7I+kAm9ZDhuOBjMFjKmLPQzA=="
     },
     "accepts": {
       "version": "1.3.7",
diff --git a/examples/azure-http-function-v3/package.json b/examples/azure-http-function-v3/package.json
index 82119f82..80ada876 100644
--- a/examples/azure-http-function-v3/package.json
+++ b/examples/azure-http-function-v3/package.json
@@ -6,7 +6,7 @@
     "start": "func start"
   },
   "dependencies": {
-    "@vendia/serverless-express": "4.5.2",
+    "@vendia/serverless-express": "4.8.2",
     "body-parser": "1.19.1",
     "compression": "^1.7.4",
     "cors": "2.8.5",
diff --git a/examples/azure-http-function-v4/HttpExample/app.js b/examples/azure-http-function-v4/HttpExample/app.js
new file mode 100644
index 00000000..2e91931d
--- /dev/null
+++ b/examples/azure-http-function-v4/HttpExample/app.js
@@ -0,0 +1,99 @@
+const path = require('path')
+const express = require('express')
+const bodyParser = require('body-parser')
+const cors = require('cors')
+const compression = require('compression')
+const { getCurrentInvoke } = require('../../../src/index') // require('@vendia/serverless-express')
+const ejs = require('ejs').__express
+const app = express()
+const router = express.Router()
+
+app.set('view engine', 'ejs')
+app.engine('.ejs', ejs)
+
+router.use(compression())
+router.use(cors())
+router.use(bodyParser.json())
+router.use(bodyParser.urlencoded({ extended: true }))
+
+// NOTE: tests can't find the views directory without this
+app.set('views', path.join(__dirname, 'views'))
+
+router.get('/api', (req, res) => {
+  const currentInvoke = getCurrentInvoke()
+  const { event = {} } = currentInvoke
+  const { requestContext = {} } = event
+  const { domainName = 'localhost:7071' } = requestContext
+  const apiUrl = `https://${domainName}`
+  res.render('index', { apiUrl })
+})
+
+router.get('/api/vendia', (req, res) => {
+  res.sendFile(path.join(__dirname, 'vendia-logo.png'))
+})
+
+router.get('/api/users', (req, res) => {
+  res.json(users)
+})
+
+router.get('/api/users/:userId', (req, res) => {
+  const user = getUser(req.params.userId)
+
+  if (!user) return res.status(404).json({})
+
+  return res.json(user)
+})
+
+router.post('/api/users', (req, res) => {
+  const user = {
+    id: ++userIdCounter,
+    name: req.body.name
+  }
+  users.push(user)
+  res.status(201).json(user)
+})
+
+router.put('/api/users/:userId', (req, res) => {
+  const user = getUser(req.params.userId)
+
+  if (!user) return res.status(404).json({})
+
+  user.name = req.body.name
+  res.json(user)
+})
+
+router.delete('/api/users/:userId', (req, res) => {
+  const userIndex = getUserIndex(req.params.userId)
+
+  if (userIndex === -1) return res.status(404).json({})
+
+  users.splice(userIndex, 1)
+  res.json(users)
+})
+
+router.get('/api/cookie', (req, res) => {
+  res.cookie('Foo', 'bar')
+  res.cookie('Fizz', 'buzz')
+  res.json({})
+})
+
+const getUser = (userId) => users.find(u => u.id === parseInt(userId))
+const getUserIndex = (userId) => users.findIndex(u => u.id === parseInt(userId))
+
+// Ephemeral in-memory data store
+const users = [{
+  id: 1,
+  name: 'Joe'
+}, {
+  id: 2,
+  name: 'Jane'
+}]
+let userIdCounter = users.length
+
+// The serverless-express library creates a server and listens on a Unix
+// Domain Socket for you, so you can remove the usual call to app.listen.
+// app.listen(3000)
+app.use('/', router)
+
+// Export your express server so you can import it in the lambda function.
+module.exports = app
diff --git a/examples/azure-http-function-v4/HttpExample/function.json b/examples/azure-http-function-v4/HttpExample/function.json
new file mode 100644
index 00000000..13f31dee
--- /dev/null
+++ b/examples/azure-http-function-v4/HttpExample/function.json
@@ -0,0 +1,16 @@
+{
+  "bindings": [
+    {
+      "authLevel": "anonymous",
+      "type": "httpTrigger",
+      "direction": "in",
+      "name": "req",
+      "route": "{*segments}"
+    },
+    {
+      "type": "http",
+      "direction": "out",
+      "name": "$return"
+    }
+  ]
+}
diff --git a/examples/azure-http-function-v4/HttpExample/index.js b/examples/azure-http-function-v4/HttpExample/index.js
new file mode 100644
index 00000000..cd74a8d2
--- /dev/null
+++ b/examples/azure-http-function-v4/HttpExample/index.js
@@ -0,0 +1,7 @@
+const serverlessExpress = require('../../../src/index') // require('@vendia/serverless-express')
+const app = require('./app')
+const cachedServerlessExpress = serverlessExpress({ app })
+
+module.exports = async function (context, req) {
+  return cachedServerlessExpress(context, req)
+}
diff --git a/examples/azure-http-function-v4/HttpExample/vendia-logo.png b/examples/azure-http-function-v4/HttpExample/vendia-logo.png
new file mode 100644
index 00000000..9257542f
Binary files /dev/null and b/examples/azure-http-function-v4/HttpExample/vendia-logo.png differ
diff --git a/examples/azure-http-function-v4/HttpExample/views/index.ejs b/examples/azure-http-function-v4/HttpExample/views/index.ejs
new file mode 100644
index 00000000..cf19f97c
--- /dev/null
+++ b/examples/azure-http-function-v4/HttpExample/views/index.ejs
@@ -0,0 +1,115 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <title>My Serverless Application</title>
+    <style>
+        body {
+            width: 650px;
+            margin: auto;
+        }
+
+        h1 {
+            text-align: center;
+        }
+
+        .resources>h2 {
+            margin-bottom: 0;
+        }
+
+        .resource>h3,
+        .resource>p {
+            display: inline-block;
+            margin-bottom: 0.5rem;
+        }
+
+        .resource>code {
+            display: block;
+            background-color: #eff0f1;
+            color: #393318;
+            padding: 5px;
+            font-family: Consolas, Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono, Bitstream Vera Sans Mono, Courier New, monospace, sans-serif;
+            white-space: nowrap;
+            overflow-x: auto;
+        }
+
+        .vendia-logo {
+            display: block;
+            width: 10rem;
+            margin: auto;
+        }
+
+        form {
+            margin-bottom: 1rem;
+        }
+
+        .form-group {
+            padding-bottom: 1rem;
+        }
+
+        label {
+            display: block;
+        }
+    </style>
+</head>
+
+<body>
+    <h1>My Serverless Application</h1><img class="vendia-logo" src="/api/vendia">
+    <p>Welcome to your Azure Function serverless application. This example application has several resources configured for you to explore. State is stored in memory in a given container, and is therefore ephemeral.</p>
+    <section class="resources">
+        <h2>Resources</h2>
+        <section class="resource">
+            <h3><a class="resource-example-link" href="/api/users">GET /users</a></h3>
+            <p> &nbsp;Returns a list of all users.</p><code>curl <span><%= apiUrl %></span>/users -H 'accept: application/json'</code>
+        </section>
+        <section class="resource">
+            <h3>POST /users</h3>
+            <p> &nbsp;Creates a new user.</p><code>curl <span><%= apiUrl %></span>/api/users -X POST -d '{"name":"Sam"}' -H 'accept: application/json'</code>
+        </section>
+        <section class="resource">
+            <h3><a class="resource-example-link" href="/api/users/1">GET /users/:userId</a></h3>
+            <p> &nbsp;Returns a single user.</p><code>curl <span><%= apiUrl %></span>/api/users/1 -H 'accept: application/json'</code>
+        </section>
+        <section class="resource">
+            <h3>PUT /users/:userId</h3>
+            <p> &nbsp;Updates an existing user.</p><code>curl <span><%= apiUrl %></span>/api/users/1 -X PUT -d '{"name":"Samantha"}' -H 'accept: application/json'</code>
+        </section>
+        <section class="resource">
+            <h3>DELETE /users/:userId</h3>
+            <p> &nbsp;Deletes an existing user.</p><code>curl <span><%= apiUrl %></span>/api/users/1 -X DELETE -H 'accept: application/json'</code>
+        </section>
+    </section>
+    <section class="form">
+        <h2>Form</h2>
+        <p>Experiment with POST and PUT via the form below. Leave the id empty to create a new user (POST) or enter an id to update a user's name (PUT).</p>
+        <form>
+            <div class="form-group"><label for="idField">user id</label><input type="text" name="id" id="idField" placeholder="optional"></div>
+            <div class="form-group"><label for="nameField">name</label><input type="text" name="name" id="nameField"></div><input type="submit">
+        </form>
+    </section>
+    <script>
+        var form = document.querySelector('form')
+        form.addEventListener('submit', function(event) {
+            event.preventDefault()
+            var id = document.getElementById('idField').value
+            var name = document.getElementById('nameField').value
+            var endpoint = id ? 'users/' + id : 'users'
+
+            if (!window.fetch) {
+                alert('Your browser does not have fetch support, which this demo uses. Try again in a modern browser (https://caniuse.com/fetch) or modify the example to use an alternate approach (e.g. XMLHttpRequest or your library of choice.)')
+            }
+
+            return fetch(endpoint, {
+                method: id ? 'PUT' : 'POST',
+                headers: {
+                    'content-type': 'application/json'
+                },
+                body: JSON.stringify({
+                    name: name
+                })
+            })
+        })
+    </script>
+</body>
+
+</html>
\ No newline at end of file
diff --git a/examples/azure-http-function-v4/README.md b/examples/azure-http-function-v4/README.md
new file mode 100644
index 00000000..7449b50e
--- /dev/null
+++ b/examples/azure-http-function-v4/README.md
@@ -0,0 +1,42 @@
+# Example - Azure Function HTTP v4
+
+This example uses the local tools provided by Microsoft to simulate an Azure Function environment. This means there is no Azure Account required to run this example.
+
+## Run local requirements
+
+These prerequisites are required to run and debug your functions locally. 
+
+- Visual Studio Code
+- Visual Studio Code - Azure Functions extension
+- Azure Functions Core Tools (`npm install -g azure-functions-core-tools@4 --unsafe-perm true`)
+- Node.js
+
+_For further information on how to run an Azure Function locally please check [Develop Azure Functions by using Visual Studio Code](https://docs.microsoft.com/en-us/azure/azure-functions/functions-develop-vs-code?tabs=nodejs)._
+
+
+## Installation & Usage
+
+After all requirements are fulfilled you can install all dependencies for the `azure-http-function-v4` with npm.
+
+```bash
+  cd examples/azure-http-function-v4
+  npm install
+  npm run start
+```
+
+
+
+After you run the last command you should see an output like this:
+
+```bash
+Azure Functions Core Tools
+Core Tools Version:       4.0.4590
+Function Runtime Version: 4.5.2.18383
+
+
+Functions:
+
+        HttpExample:  http://localhost:7071/api/{*segments}
+```
+
+Now you can navigate to `http://localhost:7071/api/` to display the `My Serverless Application` page.
\ No newline at end of file
diff --git a/examples/azure-http-function-v4/host.json b/examples/azure-http-function-v4/host.json
new file mode 100644
index 00000000..48279490
--- /dev/null
+++ b/examples/azure-http-function-v4/host.json
@@ -0,0 +1,15 @@
+{
+  "version": "2.0",
+  "logging": {
+    "applicationInsights": {
+      "samplingSettings": {
+        "isEnabled": true,
+        "excludedTypes": "Request"
+      }
+    }
+  },
+  "extensionBundle": {
+    "id": "Microsoft.Azure.Functions.ExtensionBundle",
+    "version": "[3.3.0, 4.0.0)"
+  }
+}
\ No newline at end of file
diff --git a/examples/azure-http-function-v4/local.settings.json b/examples/azure-http-function-v4/local.settings.json
new file mode 100644
index 00000000..cd849eae
--- /dev/null
+++ b/examples/azure-http-function-v4/local.settings.json
@@ -0,0 +1,8 @@
+{
+  "IsEncrypted": false,
+  "Values": {
+    "FUNCTIONS_WORKER_RUNTIME": "node",
+    "AzureWebJobsStorage": "",
+    "FUNCTIONS_EXTENSION_VERSION": "~4"
+  }
+}
\ No newline at end of file
diff --git a/examples/azure-http-function-v4/package-lock.json b/examples/azure-http-function-v4/package-lock.json
new file mode 100644
index 00000000..0cc5335e
--- /dev/null
+++ b/examples/azure-http-function-v4/package-lock.json
@@ -0,0 +1,1318 @@
+{
+  "name": "@vendia/serverless-express-example",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@vendia/serverless-express-example",
+      "dependencies": {
+        "@vendia/serverless-express": "4.8.2",
+        "body-parser": "1.19.1",
+        "compression": "^1.7.4",
+        "cors": "2.8.5",
+        "ejs": "3.1.7",
+        "express": "4.17.2"
+      }
+    },
+    "node_modules/@vendia/serverless-express": {
+      "version": "4.8.2",
+      "resolved": "https://registry.npmjs.org/@vendia/serverless-express/-/serverless-express-4.8.2.tgz",
+      "integrity": "sha512-biv23HiYXZFe7ULKFIkdYLWtc07yN/iGMq9fg00nfbVqWeJvtfEubUimnhPwoR7I+kAm9ZDhuOBjMFjKmLPQzA==",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/accepts": {
+      "version": "1.3.7",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
+      "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
+      "dependencies": {
+        "mime-types": "~2.1.24",
+        "negotiator": "0.6.2"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/ansi-styles": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
+      "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+      "dependencies": {
+        "color-convert": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
+    "node_modules/array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+    },
+    "node_modules/async": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.4.tgz",
+      "integrity": "sha512-iAB+JbDEGXhyIUavoDl9WP/Jj106Kz9DEn1DPgYw5ruDn0e3Wgi3sKFm55sASdGBNOQB8F59d9qQ7deqrHA8wQ=="
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="
+    },
+    "node_modules/body-parser": {
+      "version": "1.19.1",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.1.tgz",
+      "integrity": "sha512-8ljfQi5eBk8EJfECMrgqNGWPEY5jWP+1IzkzkGdFFEwFQZZyaZ21UqdaHktgiMlH0xLHqIFtE/u2OYE5dOtViA==",
+      "dependencies": {
+        "bytes": "3.1.1",
+        "content-type": "~1.0.4",
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "http-errors": "1.8.1",
+        "iconv-lite": "0.4.24",
+        "on-finished": "~2.3.0",
+        "qs": "6.9.6",
+        "raw-body": "2.4.2",
+        "type-is": "~1.6.18"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/bytes": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.1.tgz",
+      "integrity": "sha512-dWe4nWO/ruEOY7HkUJ5gFt1DCFV9zPRoJr8pV0/ASQermOZjtq8jMjOprC0Kd10GLN+l7xaUPvxzJFWtxGu8Fg==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/chalk": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
+      "integrity": "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==",
+      "dependencies": {
+        "ansi-styles": "^4.1.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
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diff --git a/examples/azure-http-function-v4/package.json b/examples/azure-http-function-v4/package.json
new file mode 100644
index 00000000..80ada876
--- /dev/null
+++ b/examples/azure-http-function-v4/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "@vendia/serverless-express-example",
+  "version": "",
+  "description": "Example application for running a Node Express app with an Azure Function.",
+  "scripts": {
+    "start": "func start"
+  },
+  "dependencies": {
+    "@vendia/serverless-express": "4.8.2",
+    "body-parser": "1.19.1",
+    "compression": "^1.7.4",
+    "cors": "2.8.5",
+    "ejs": "3.1.7",
+    "express": "4.17.2"
+  },
+  "author": ""
+}
diff --git a/jest-helpers/azure-http-function-v4-event.js b/jest-helpers/azure-http-function-v4-event.js
new file mode 100644
index 00000000..6992e8a7
--- /dev/null
+++ b/jest-helpers/azure-http-function-v4-event.js
@@ -0,0 +1,114 @@
+const { URLSearchParams } = require('url')
+const clone = require('./clone')
+const mergeDeep = require('./merge-deep')
+
+const azureHttpFunctionV4Event = {
+  traceContext: { traceparent: '', tracestate: '', attributes: {} },
+  req: {
+    headers: {
+      accept: 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
+      'accept-encoding': 'gzip, deflate, br',
+      'accept-language': 'en-US,en;q=0.9',
+      'cache-control': 'max-age=0',
+      host: '6bwvllq3t2.execute-api.us-east-1.amazonaws.com',
+      'sec-fetch-dest': 'document',
+      'sec-fetch-mode': 'navigate',
+      'sec-fetch-site': 'none',
+      'sec-fetch-user': '?1',
+      'upgrade-insecure-requests': '1',
+      'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36',
+      'x-amzn-trace-id': 'Root=1-5ff59707-4914805430277a6209549a59',
+      'x-forwarded-for': '203.123.103.37',
+      'x-forwarded-port': '443',
+      'x-forwarded-proto': 'https'
+    }
+  }
+}
+
+function isJsonString (str) {
+  try {
+    JSON.parse(str)
+  } catch (e) {
+    return false
+  }
+  return true
+}
+
+function makeAzureHttpFunctionV4Event (values = {}) {
+  process.env.FUNCTIONS_EXTENSION_VERSION = '~4'
+
+  const baseEvent = clone(azureHttpFunctionV4Event)
+  const mergedEvent = mergeDeep(baseEvent, values)
+
+  mergedEvent.req.method = values.httpMethod
+  mergedEvent.req.url = 'http://localhost:7071'
+  mergedEvent.req.url += values.path
+
+  if (values.multiValueQueryStringParameters) {
+    const multiValueQueryStringParametersToArray = []
+    Object.entries(values.multiValueQueryStringParameters).forEach(([qKey, qValues]) => {
+      qValues.forEach((qValue) => {
+        multiValueQueryStringParametersToArray.push([qKey, qValue])
+      })
+    })
+    const rawQueryString = new URLSearchParams(multiValueQueryStringParametersToArray)
+    mergedEvent.req.url += '?' + rawQueryString.toString()
+  }
+
+  if (values.body && Buffer.from(values.body, 'base64').toString('base64') === values.body) {
+    mergedEvent.req.rawBody = Buffer.from(values.body, 'base64').toString('utf8')
+  } else {
+    mergedEvent.req.rawBody = values.body
+  }
+
+  if (isJsonString(mergedEvent.req.rawBody)) {
+    mergedEvent.req.body = JSON.parse(mergedEvent.req.rawBody)
+  } else {
+    mergedEvent.req.body = mergedEvent.req.rawBody
+  }
+
+  mergedEvent.req.headers = convertMultiValueHeadersToHeaders({ multiValueHeaders: values.multiValueHeaders })
+
+  return mergedEvent
+}
+
+function convertMultiValueHeadersToHeaders ({ multiValueHeaders }) {
+  const headers = {}
+
+  if (!multiValueHeaders) return headers
+
+  Object.entries(multiValueHeaders).forEach(([key, value]) => {
+    headers[key] = value.join(',')
+  })
+
+  return headers
+}
+
+function makeAzureHttpFunctionV4Response (values = {}, { shouldConvertContentLengthToInt = false } = {}) {
+  const baseResponse = {
+    body: '',
+    isBase64Encoded: false,
+    statusCode: 200,
+    headers: {
+      'content-type': 'application/json; charset=utf-8',
+      'x-powered-by': 'Express'
+    }
+  }
+
+  values.headers = convertMultiValueHeadersToHeaders({ multiValueHeaders: values.multiValueHeaders })
+  delete values.multiValueHeaders
+  delete values.headers['set-cookie']
+
+  if (shouldConvertContentLengthToInt) {
+    if (values.headers['content-length']) values.headers['content-length'] = parseInt(values.headers['content-length'])
+  }
+
+  const mergedResponse = mergeDeep(baseResponse, values)
+
+  return mergedResponse
+}
+
+module.exports = {
+  makeAzureHttpFunctionV4Event,
+  makeAzureHttpFunctionV4Response
+}
diff --git a/jest-helpers/index.js b/jest-helpers/index.js
index 9cd71e68..f826cb25 100644
--- a/jest-helpers/index.js
+++ b/jest-helpers/index.js
@@ -3,13 +3,15 @@ const { makeApiGatewayV2Event, makeApiGatewayV2Response } = require('./api-gatew
 const { makeAlbEvent, makeAlbResponse } = require('./alb-event')
 const { makeLambdaEdgeEvent, makeLambdaEdgeResponse } = require('./lambda-edge-event.js')
 const { makeAzureHttpFunctionV3Event, makeAzureHttpFunctionV3Response } = require('./azure-http-function-v3-event')
+const { makeAzureHttpFunctionV4Event, makeAzureHttpFunctionV4Response } = require('./azure-http-function-v4-event')
 
 const EVENT_SOURCE_NAMES = [
   'alb',
   'apiGatewayV1',
   'apiGatewayV2',
   'lambdaEdge',
-  'azureHttpFunctionV3'
+  'azureHttpFunctionV3',
+  'azureHttpFunctionV4'
 ]
 
 const FRAMEWORK_NAMES = [
@@ -57,6 +59,8 @@ function makeEvent ({ eventSourceName, ...rest }) {
       return makeLambdaEdgeEvent(rest)
     case 'azureHttpFunctionV3':
       return makeAzureHttpFunctionV3Event(rest)
+    case 'azureHttpFunctionV4':
+      return makeAzureHttpFunctionV4Event(rest)
     default:
       throw new Error(`Unknown eventSourceName ${eventSourceName}`)
   }
@@ -74,6 +78,8 @@ function makeResponse ({ eventSourceName, ...rest }, { shouldConvertContentLengt
       return makeLambdaEdgeResponse(rest)
     case 'azureHttpFunctionV3':
       return makeAzureHttpFunctionV3Response(rest, { shouldConvertContentLengthToInt })
+    case 'azureHttpFunctionV4':
+      return makeAzureHttpFunctionV4Response(rest, { shouldConvertContentLengthToInt })
     default:
       throw new Error(`Unknown eventSourceName ${eventSourceName}`)
   }
diff --git a/src/event-sources/azure/http-function-runtime-v4.js b/src/event-sources/azure/http-function-runtime-v4.js
new file mode 100644
index 00000000..3aa86408
--- /dev/null
+++ b/src/event-sources/azure/http-function-runtime-v4.js
@@ -0,0 +1,6 @@
+const { getRequest, getResponse } = require('./http-function-runtime-v3')
+
+module.exports = {
+  getRequest: getRequest,
+  getResponse: getResponse
+}
diff --git a/src/event-sources/index.js b/src/event-sources/index.js
index d6eb4624..11e05778 100644
--- a/src/event-sources/index.js
+++ b/src/event-sources/index.js
@@ -6,6 +6,7 @@ const awsSnsEventSource = require('./aws/sns')
 const awsSqsEventSource = require('./aws/sqs')
 const awsDynamoDbEventSource = require('./aws/dynamodb')
 const azureHttpFunctionV3EventSource = require('./azure/http-function-runtime-v3')
+const azureHttpFunctionV4EventSource = require('./azure/http-function-runtime-v4')
 const awsEventBridgeEventSource = require('./aws/eventbridge')
 const awsKinesisEventSource = require('./aws/kinesis')
 
@@ -25,6 +26,8 @@ function getEventSource ({ eventSourceName }) {
       return awsSnsEventSource
     case 'AZURE_HTTP_FUNCTION_V3':
       return azureHttpFunctionV3EventSource
+    case 'AZURE_HTTP_FUNCTION_V4':
+      return azureHttpFunctionV4EventSource
     case 'AWS_SQS':
       return awsSqsEventSource
     case 'AWS_EVENTBRIDGE':
diff --git a/src/event-sources/utils.js b/src/event-sources/utils.js
index cdc50c39..c5537e12 100644
--- a/src/event-sources/utils.js
+++ b/src/event-sources/utils.js
@@ -95,11 +95,13 @@ function getEventSourceNameBasedOnEvent ({
 
     if (!functionsExtensionVersion) {
       console.warn('The environment variable \'FUNCTIONS_EXTENSION_VERSION\' is not set. Only the function runtime \'~3\' is supported.')
-    } else if (functionsExtensionVersion !== '~3') {
-      console.warn('Only the function runtime \'~3\' is supported.')
+    } else if (functionsExtensionVersion === '~3') {
+      return 'AZURE_HTTP_FUNCTION_V3'
+    } else if (functionsExtensionVersion === '~4') {
+      return 'AZURE_HTTP_FUNCTION_V4'
+    } else {
+      console.warn('The function runtime \'' + functionsExtensionVersion + '\' is not supported. Only \'~3\' and \'~4\' are supported.')
     }
-
-    return 'AZURE_HTTP_FUNCTION_V3'
   }
   if (
     event.version &&
diff --git a/src/transport.js b/src/transport.js
index a8d5cba9..0e154b3e 100644
--- a/src/transport.js
+++ b/src/transport.js
@@ -64,7 +64,8 @@ function respondToEventSourceWithError ({
     eventSourceName !== 'AWS_LAMBDA_EDGE' &&
     eventSourceName !== 'AWS_API_GATEWAY_V1' &&
     eventSourceName !== 'AWS_API_GATEWAY_V2' &&
-    eventSourceName !== 'AZURE_HTTP_FUNCTION_V3'
+    eventSourceName !== 'AZURE_HTTP_FUNCTION_V3' &&
+    eventSourceName !== 'AZURE_HTTP_FUNCTION_V4'
   ) {
     resolver.fail({ error })
     return